During receptor-mediated endocytosis
a. plasma membrane receptors bind molecules
to be enclosed.
b. a small pit forms beneath the receptors.
c. a pit closes back on itself.
d. a vesicle forms.
e. all of these occur
E
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In the taxonomic hierarchy, a family consists of a group of similar ____
a. orders b. classes c. species d. genera e. domains
The presences of different genes for several types of hemoglobin in mammals, but not in sharks and
many other vertebrates, is evidence of ____ of genetic material.
a. an inversion b. duplication c. reciprocal translocation d. deletion e. both duplication and deletion
The polymerase chain reaction (PCR) uses ________, nucleotides, and a heat-resistant DNA polymerase to rapidly
increase the number of molecules of a DNA fragment. Fill in the blank(s) with the appropriate word(s).
Where is the iron-binding protein transferrin found?
A) red blood cells B) blood plasma and extracellular fluids C) neutrophil granules D) milk and tears E) saliva and mucus